Look at those guys. This strange horticultural technique called Espalier aims to grow trees in a flat manner, which can end up increasing fruit yield, and maximizing or minimizing sunlight exposure. Tinker around with that sunlight exposure, and you're actually able to capitalize on more fruitful growing seasons. With all the benefits of Espalier having been noted, there's no getting around the fact that it does look like a real life take on the infamous video game, Terraria.
Check out some more weird tree lore with this Tumblr thread about how trees are low key monsters.